Music – Instruments – Electrical musical tone generation
Patent
1996-09-20
1997-07-15
Martin, David S.
Music
Instruments
Electrical musical tone generation
84652, 84477B, 84484, 395 21, 395900, G10H 700
Patent
active
056486278
ABSTRACT:
A performance control apparatus is provided to control a manner of performance played by an electronic musical apparatus. Herein, sensors are provided to sense a swing motion of a baton which is swung by a human operator in response to time of music to be played (e.g., triple time). Then, a peak is detected from outputs of the sensors in accordance with a peak detection process using a fuzzy inference process. A kind of the swing motion is discriminated by effecting another fuzzy inference process on a result of the peak detection process. Concretely, the kind of the swing motion is discriminated as one of predetermined motions which are determined specifically with respect to time of the music. Performance control information is created based on the discriminated kind of the swing motion. Thus, a tempo and/or dynamics of performance is controlled in response to the performance control information. Incidentally, the fuzzy inference processes can be replaced by a neural network whose structure is determined in advance to calculate probabilities with respect to the swing motion so that the kind of the swing motion is discriminated. Moreover, the sensors can be constructed by angular velocity sensors, preferably piezoelectric-vibration gyro sensors, to detect angular velocities of the swing motion of the baton in axial directions.
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Donels Jeffrey W.
Martin David S.
Yamaha Corporation
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